Hertel E2080040 Square End Mill 5/8 Inch Cobalt

Product Description

The HERTEL E2080040 is a cobalt square end mill designed for milling ferrous and difficult-to-machine materials in metalworking applications. Built from M42 cobalt high-speed steel, this tool delivers heat resistance and edge retention when cutting at elevated speeds. It features a 5/8 inch cutting diameter, a 2 inch length of cut, and a 4-1/8 inch overall length. The uncoated, spiral-flute geometry with a 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. This is a long-length end mill, suited for applications requiring extended reach into pockets or deep slots.

This end mill is used in manual mills, CNC machining centers, and knee mills for slotting, profiling, and peripheral milling in steel, stainless steel, cast iron, and similar materials. The center-cutting design allows plunge entry without a pre-drilled pilot hole. The long flute length makes it appropriate for deep-pocket milling where a standard-length end mill cannot reach. Machinists and toolroom operators in production and job-shop environments are the primary users of this tool type.

Key Features

• M42 cobalt construction for heat and wear resistance in ferrous and hardened materials
• 5/8 inch cutting diameter with a matching 5/8 inch shank for direct collet or end mill holder mounting
• 2 inch length of cut supports deep-pocket and slotting operations
• 30-degree helix angle with spiral flute geometry for smooth chip flow and reduced chatter
• Center-cutting end enables direct plunge entry
• Right-hand cut and right-hand flute with uncoated finish for general-purpose use

Compatibility

Designed for use in standard end mill holders, collet chucks, and milling machine spindles accepting a 5/8 inch straight shank. Suitable for manual and CNC milling equipment across general metalworking and toolroom applications.

Installation Notes

Installation of this end mill should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Seat the shank to the recommended engagement depth in the holder and torque set screws per the toolholder manufacturer specifications. Confirm runout with a dial indicator before engaging the cut, particularly given the long-length configuration.